1ToDo/Get-RBACRole.ps1

<#
 
.COPYRIGHT
Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
See https://github.com/microsoftgraph/powershell-intune-samples/blob/master/LICENSE for license information.
 
#>


Function Get-RBACRole() {
    
        <#
    .SYNOPSIS
    This function is used to get RBAC Role Definitions from the Graph API REST interface
    .DESCRIPTION
    The function connects to the Graph API Interface and gets any RBAC Role Definitions
    .EXAMPLE
    Get-RBACRole
    Returns any RBAC Role Definitions configured in Intune
    .NOTES
    NAME: Get-RBACRole
    #>

    
        [cmdletbinding()]
    
        param
        (
            $Name
        )
    
        $graphApiVersion = "Beta"
        $Resource = "deviceManagement/roleDefinitions"
    
        try {
    
            if ($Name) {
    
                $uri = "https://graph.microsoft.com/$graphApiVersion/$($Resource)"
                (Invoke-RestMethod -Uri $uri -Headers $authToken -Method Get).Value | Where-Object { ($_.'displayName').contains("$Name") -and $_.isBuiltInRoleDefinition -eq $false }
    
            }
    
            else {
    
                $uri = "https://graph.microsoft.com/$graphApiVersion/$($Resource)"
                (Invoke-RestMethod -Uri $uri -Headers $authToken -Method Get).Value
    
            }
    
        }
    
        catch {
    
            $ex = $_.Exception
            $errorResponse = $ex.Response.GetResponseStream()
            $reader = New-Object System.IO.StreamReader($errorResponse)
            $reader.BaseStream.Position = 0
            $reader.DiscardBufferedData()
            $responseBody = $reader.ReadToEnd();
            Write-Host "Response content:`n$responseBody" -f Red
            Write-Error "Request to $Uri failed with HTTP Status $($ex.Response.StatusCode) $($ex.Response.StatusDescription)"
            
            break
    
        }
    
    }